From the U.S. Postal Service announcement on November 17, 2020:
From the USPS: The Colorado hairstreak graces the eighth nonmachinable butterfly stamp for use on irregularly sized envelopes, such as square greeting cards, invitations or announcements. The stamp art is a highly stylized, simplified image of a Colorado hairstreak (Hypaurotis crysalus). Artist Tom Engeman created the stamp art. Art director Derry Noyes designed the stamp.
Here is a Dragon Card first day cover showing the previous 7 stamps in this series:
Additional information will be posted below the line, with the most recent at the top.
Updated August 31st:
After the August 29th rate increase, this stamp only covers the non-machineable rate and has a price of 88¢.
Updated April 6th:
The Scott catalogue number for this issue is 5568.
Updated March 3rd:
The only first-day postmark for this issue is the FIRST DAY OF ISSUE “killer bar.”
Updated March 2nd:
[from USPS — Ceremony Details] [click pictures for bigger version]
Colorado’s Hairstreak Butterfly Featured on New Stamp for Irregularly Shaped Cards
WHAT: The shimmering purple of the Colorado hairstreak butterfly will be commemorated by the U.S. Postal Service as the eighth stamp in the non-machineable butterfly stamp series.
The virtual dedication event for the Colorado Hairstreak stamp is free and open to the public. News of the stamp is being shared with the hashtag#ColoradoHairstreakstamps.
WHO: William D. Zollars, Board of Governors, U.S. Postal Service
Dr. Paul A. Opler, Professor, Department of Agricultural Biology, Colorado State University
WHEN: Tuesday, March 9, 2021, at 11:30 a.m. EST
WHERE: The virtual stamp event will be hosted on the U.S. Postal Service Facebook and Twitter pages.
RSVP: Please visit usps.com/cohairstreakbutterfly for details of the virtual stamp dedication ceremony.
BACKGROUND: Colorado’s state insect, the vibrant Colorado hairstreak, lives among oak trees in that state and the rest of the Four Corners states — Arizona, New Mexico and Utah — as well as eastern Nevada, southern Wyoming and northern Mexico.
Colorado hairstreak caterpillars hatch in the spring from eggs laid the previous autumn. Plump and green with white fuzz, they feed on the tender new leaves of their host plant, the Gambel oak (Quercus gambelii), also known as the “scrub oak.”
After metamorphosis, the butterfly emerges from its cocoon in late spring or summer. The butterflies dart in and out of the tree’s branches, feeding on the tree’s sap and fallen raindrops. Mature males look for females receptive to mating. Later, the female lays her eggs singly on the host plant and the cycle of life begins anew not far from their ancestral home. In its entire life, the Colorado hairstreak may travel no more than a few yards from where it hatched.
These colorful square non-machineable surcharge stamps were developed in collaboration with the greeting card industry and will be issued in panes of 20 for use on irregular-size envelopes, such as square greeting cards, invitations or announcements. The words “NON-MACHINEABLE SURCHARGE” on the stamp indicate its usage value. The stamp is being issued at the current rate of 75 cents and, like a Forever stamp, this stamp will always be valid for the class of mail printed on it.
Updated February 1st:
Formats corrected in earlier entry. There will be just the one, a pane of 20.
Updated January 29th from the Postal Bulletin:
On March 9, 2021, in Estes Park, CO, the United States Postal Service® will issue the Colorado Hairstreak stamp (Non-denominated priced at the Non-machineable Surcharge 
rate) in one design, in a pressure-sensitive adhesive (PSA) pane of 20 stamps (Item 121200). This stamp will go on sale nationwide March 9, 2021, and must not be sold or canceled before the first-day-of-issue.
The Colorado hairstreak graces the eighth non-machineable butterfly stamp for use on irregularly-sized envelopes, such as square greeting cards, invitations, or announcements. The stamp art was created digitally using images of preserved butterflies as a starting point. The result is a highly-stylized, simplified image of a Colorado hairstreak (Hypaurotis crysalus) rather than an exact replica. The Colorado hairstreak, that state’s official insect, is not attracted to flowers. The small, shimmering, purple butterfly perches in oak trees in the Southwest, sipping sap and raindrops. Tom Engeman created the stamp art. Art director Derry Noyes designed the stamp.
No automatic distribution.
How to Order the First-Day-of-Issue Postmark:
Customers have 120 days to obtain the first-day-of-issue postmark by mail. They may purchase new stamps at their local Post Office™ or at The Postal Store® website at usps.com/shop. They must affix the stamps to envelopes of their choice, address the envelopes (to themselves or others), and place them in a larger envelope addressed to:
FDOI – Colorado Hairstreak Stamp
USPS Stamp Fulfillment Services
8300 NE Underground Drive, Suite 300
Kansas City, MO 64144-9900
After applying the first-day-of-issue postmark, the Postal Service™ will return the envelopes through the mail. There is no charge for the postmark up to a quantity of 50. There is a 5-cent charge for each additional postmark over 50. All orders must be postmarked by July 9, 2021.
Technical Specifications:
Issue: Colorado Hairstreak Stamp
Item Number: 121200
Denomination & Type of Issue: Non-machineable Surcharge
Format: Pane of 20 (1 design)
Series: N/A
Issue Date & City: March 9, 2021, Estes Park, CO 80517
Art Director: Derry Noyes, Washington, DC
Designer: Derry Noyes, Washington, DC
Artist: Tom Engeman, Kensington, MD
Modeler: Sandra Lane/Michelle Finn
Manufacturing Process: Offset, Microprint
Printer: Banknote Corporation of America
Press Type: Alprinta 74
Stamps per Pane: 20
Print Quantity: 75,000,000 stamps
Paper Type: Phosphor, Block Tag
Adhesive Type: Pressure-sensitive
Colors: Black, Pantone 1795, Cyan, Magenta, Yellow
Stamp Orientation: Square
Image Area (w x h): 1.085 x 1.085 in./27.559 x 27.559 mm
Overall Size (w x h): 1.225 x 1.225 in./31.115 x 31.115 mm
Full Pane Size (w x h): 5.9 x 7.12 in./149.86 x 180.848 mm
Plate Size: 240 stamps per revolution
Plate Number: “B” followed by five (5) single digits in four corners
Marginal Markings:
Front: Header: Colorado Hairstreak • Plate number in four corners
Back: ©2020 USPS • USPS logo • 2 barcodes (121200) • Plate position diagram (6) • Promotional text
Updated January 25th:
This stamp will be issued on Tuesday, March 9th, with a first-day city of Estes Park, CO. That’s about 50 miles northwest of Denver, and the location of the headquarters for the Rocky Mountain National Park.
According to the Park’s website, it is home to 141 species of butterflies, and not just the Colorado Hairstreak, but at least eight Hairstreak varieties! They’re all part of the Gossamer Wing family, or Lycaenidae.
From the USPS: The new Mystery Message stamp will put your sleuthing skills to the test. Featuring bright colors and interesting shapes, the stamp design is a visual riddle spelling out a message. Each colorful square contains a letter in an interesting pattern. The patterns, though seemingly random, were carefully placed so that when put all together, the message reads, “MORE THAN MEETS THE EYE!” Art director Antonio Alcalá designed the stamp.
From the USPS: Garden Beauty celebrates America’s love of flowers and gardens with 10 new stamp designs in a booklet of 20. The stamps include a pink flowering dogwood; a rose-pink and white tulip; an allium, or ornamental onion; a pink and white Asiatic lily; a magenta dahlia; a yellow and pink American lotus; a pink moth orchid with mottled petals; a pink and white sacred lotus; an orange and yellow tulip; and a yellow moth orchid with a pink center. Art director Ethel Kessler designed the stamps with existing photographs by Allen Rokach.
5558 Pink Flowering Dogwood
The Digital Color Postmark measures 2.96″ x 1.47″ 
The pictorial postmark measures 2.59″ x 1.22″. The previously announced “killerbar” (“FIRST DAY OF ISSUE”) hand cancel is also available.
Colors: Cyan, Magenta, Yellow, Black
From the USPS: Chien-Shiung Wu (1912-1997) was one of the most influential nuclear physicists of the 20th century. During a career that spanned more than 40 years in a field dominated by men, she established herself as the authority on conducting precise and accurate research to test fundamental theories of physics. Art Director Ethel Kessler designed the stamp with original art by Kam Mak.
most influential nuclear physicists of the 20th century, with a commemorative Forever stamp.
The Digital Color Postmark measures 2.91″ x 1.50″ 
The B&W pictorial postmark measures 2.73″ x .78″ 
The special postmark, for use by other post offices, measures 2.49″ x 1.00
From the USPS: The Postal Service continues its popular Love series with a new stamp in 2021. The stamp art features a lighthearted and colorful digital illustration with the word “LOVE” and three large hearts shown in an unconventional palette of color duos, strikingly set against a dark blue background. Greg Breeding was art director; Bailey Sullivan created the original art and designed the stamp.
pages.Please visit usps.com/love for details of the dedication ceremony.
The Digital Color Postmark measures 2.67″ x 1.34″ 
The pictorial postmark measures 2.64″ x 1.14″
From the USPS: In 2021, the Postal Service will issue the second of 12 stamps in a new series of Lunar New Year stamps. Calling to mind the elaborately decorated masks used in the dragon or lion dances often performed during Lunar New Year parades, these three-dimensional masks are a contemporary take on the long tradition of paper-cut folk art crafts created during this auspicious time of year. Art director Antonio Alcalá designed the stamp with original art by Camille Chew.
The Digital Color Postmark measures 2.87″ x 1.41″ 
The pictorial postmark measures 2.13″ x 1.23″
one design, in a pressure-sensitive adhesive (PSA) pane of 20 stamps (Item 480100). This stamp will go on sale nationwide February 2, 2021, and must not be sold or canceled before the first-day-of-issue. The Lunar New Year – Year of the Ox commemorative pane of 20 stamps must not be split and the stamps must not be sold individually.
church, dedicated to Saint Andrew and is one of 124 existing round-tower churches in Norfolk. It is thought to date from circa 900AD and said to be one of the oldest in England.
Location: St Andrew’s Church, Coln Rogers, Gloucestershire. This is an Anglican parish church and is dedicated to Saint Andrew. It is often described as being rather unique, as it has a Saxon nave and chancel which have survived almost intact. It dates to the mid-11th century.
built in 1841 in the gothic style, and is known for its beautiful stained-glass windows in the eastern apse of the chancel, and the rose window above the west door.
Anglo Saxon but only the foundations from this early church remain. A Norman church was built over them in the 11th century and this forms the present-day chancel. It was enlarged in about 1240. Further additions and modifications took place during later centuries, Including the installation of a number of stained-glass windows by various makers in the Victorian period.
church of Topcliffe, near Thirskand the present building dates from the 13th century and was largely rebuilt by railway architect George T Andrews in 1885.
1838, with a west tower, large nave, transepts, chancel and vestry added later in 1936.
5524 (55¢) Mayflower in Plymouth Harbor
OTTAWA – The stories behind some of Canada’s most historic milestones, significant achievements, iconic artists and natural wonders will come to life in the 2021 stamp program. Here are some highlights:
OTTAWA – Le programme des timbres-poste de 2021 donnera vie à des moments historiques, des réalisations majeures, de grands artistes et des merveilles de la nature du Canada. En voici quelques points saillants :
